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The fine anatomy of the human spinal meninges. A light and scanning electron microscopy study.
J Neurosurg 1988; 69(2):276-82JN

Abstract

The fine anatomy of the human spinal meninges was examined in five postmortem spinal cords taken within 12 hours after death from patients aged 15 months to 46 years. Specimens of spinal cord were viewed in transverse section and from the dorsal and ventral aspects by scanning electron microscopy. Transverse sections of spinal cord and meninges were also examined by light microscopy. The arachnoid mater was seen to be closely applied to the inner aspect of the dura. An intermediate fenestrated leptomeningeal layer was observed attached to the inner aspect of the arachnoid mater and was reflected ventrally to form a series of dorsal septa. As it arborized laterally over the surface of the cord to surround nerves and blood vessels, the intermediate layer became highly fenestrated but remained distinct from the pia and arachnoid mater. The pia mater appeared to form a continuous layer which was reflected off the surface of the cord to coat blood vessels within the subarachnoid space in a manner similar to that described in the leptomeninges over the human cerebral cortex. Each dentate ligament consisted of a collagenous core which was continuous with the subpial connective tissue and was attached at intervals to the dura; pia-arachnoid cells coated the surface of the dentate ligaments. The present study suggests that the fine anatomy of the human spinal meninges differs significantly from that described in other mammals.

Authors+Show Affiliations

Department of Neuropathology, Southampton University Medical School, England.No affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

3392571

Citation

Nicholas, D S., and R O. Weller. "The Fine Anatomy of the Human Spinal Meninges. a Light and Scanning Electron Microscopy Study." Journal of Neurosurgery, vol. 69, no. 2, 1988, pp. 276-82.
Nicholas DS, Weller RO. The fine anatomy of the human spinal meninges. A light and scanning electron microscopy study. J Neurosurg. 1988;69(2):276-82.
Nicholas, D. S., & Weller, R. O. (1988). The fine anatomy of the human spinal meninges. A light and scanning electron microscopy study. Journal of Neurosurgery, 69(2), pp. 276-82.
Nicholas DS, Weller RO. The Fine Anatomy of the Human Spinal Meninges. a Light and Scanning Electron Microscopy Study. J Neurosurg. 1988;69(2):276-82. PubMed PMID: 3392571.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The fine anatomy of the human spinal meninges. A light and scanning electron microscopy study. AU - Nicholas,D S, AU - Weller,R O, PY - 1988/8/1/pubmed PY - 1988/8/1/medline PY - 1988/8/1/entrez SP - 276 EP - 82 JF - Journal of neurosurgery JO - J. Neurosurg. VL - 69 IS - 2 N2 - The fine anatomy of the human spinal meninges was examined in five postmortem spinal cords taken within 12 hours after death from patients aged 15 months to 46 years. Specimens of spinal cord were viewed in transverse section and from the dorsal and ventral aspects by scanning electron microscopy. Transverse sections of spinal cord and meninges were also examined by light microscopy. The arachnoid mater was seen to be closely applied to the inner aspect of the dura. An intermediate fenestrated leptomeningeal layer was observed attached to the inner aspect of the arachnoid mater and was reflected ventrally to form a series of dorsal septa. As it arborized laterally over the surface of the cord to surround nerves and blood vessels, the intermediate layer became highly fenestrated but remained distinct from the pia and arachnoid mater. The pia mater appeared to form a continuous layer which was reflected off the surface of the cord to coat blood vessels within the subarachnoid space in a manner similar to that described in the leptomeninges over the human cerebral cortex. Each dentate ligament consisted of a collagenous core which was continuous with the subpial connective tissue and was attached at intervals to the dura; pia-arachnoid cells coated the surface of the dentate ligaments. The present study suggests that the fine anatomy of the human spinal meninges differs significantly from that described in other mammals. SN - 0022-3085 UR - https://www.unboundmedicine.com/medline/citation/3392571/The_fine_anatomy_of_the_human_spinal_meninges__A_light_and_scanning_electron_microscopy_study_ L2 - https://thejns.org/doi/10.3171/jns.1988.69.2.0276 DB - PRIME DP - Unbound Medicine ER -